Respiratory mask



FIG. 1 is a perspective view of a respiratory mask showing our new design.

FIG. 2 is an additional perspective view of the respiratory mask in accordance with our new design.

FIG. 3 is a front view of the respiratory mask shown in FIG. 3.

FIG. 4 is a side view of the respiratory mask shown in FIG. 1. The opposite side is similar and not separately illustrated herein.

FIG. 5 is a top view of the respiratory mask shown in FIG. 1.

FIG. 6 is a back view of the respiratory mask shown in FIG. 1; and,

FIG. 7 is a bottom view of the respiratory mask shown in FIG. 1.

The broken line showing is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a respiratory mask, as shown and described. 